It seems pretty clear that Todd confirmed you cannot spam unlock spells to raise alteration.
From the rest of his comment, it seems like they made an effort to remove those kinds of repetitive activities, not only running and jumping but (hopefully) all the repetitive spell casting as well.
Whether they did this by implementing time limits, restricting skill gains to activities during combat, or some other ingenious method, I have no idea.
But they certainly didn't replace this with XP from quests, as it has already been confirmed that you only get XP from using your skills.
It's a mystery to me how they implemented these changes, but hopefully we will see more details revealed in the Skyrim Fan Interview and E3.
Okay - let's anolyze this:
- In previous games many were increased skills by casting the "unlock door" fifty times on a door, and the like. Is this still possible?
- We have resolved most of these issues. Some of the skills we have, for example, gotten rid of, like "Athletics" and "Acrobatics". For who creates a character and think "I'll role-play a guy who runs"? Much of the repetitive action program is usually just removed.
In the first place, the question is mind-numbingly stupid, since, in fact, you couldn't cast "unlock door" fifty times on a door without locking it in between casts, and there's no way in game to lock a door. So obviously whoever asked the question hasn't even played the game.
Second, what Todd really said was "We have resolved most of these issues." That's it. No more detail than that. That's not an explanation - it's barely even a statement, since it's so broad and vague as to be essentially meaningless. It's the sort of thing that one hears from a politician's spokesperson.
And it's certainly of note that in response to the first question, he says, "It's (getting perks) by increasing skills. You invest points in them, and given the opportunity to select various special attacks and such things. It is basically like a regular perk tree, just that there are certain requirements before you can unlock various perks." That means that, in the end, the system is going to be just about exactly the same as Oblivion's - before you can get whatever you want, you're going to have to increase your skills - meet "certain requirements." Which flies directly in the face of the notion that the skill-spamming that people "had to" do in Oblivion has suddenly vanished in Skyrim.
I'll predict right now that all the people who thought they "had to" spam skills in Oblivion in order to get attribute increases are going to think that they "have to" spam skills in Skyrim in order to get perks.
I only hope that it ends up as optional as it really was in Oblivion, rather than as necessary as so many seem to think it was.....